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						<h1>Source for file filter.php</h1>
<p>Documentation is available at <a href="../LIST_Libraries/_libraries---filter.php.html">filter.php</a></p>
<div class="src-code">
<div class="src-code"><ol><li><div class="src-line"><a name="a1"></a><span class="src-php">&lt;?php&nbsp;</span><span class="src-key">if&nbsp;</span><span class="src-sym">(&nbsp;</span><span class="src-sym">!&nbsp;</span><a href="http://www.php.net/defined">defined</a><span class="src-sym">(</span><span class="src-str">'BASEPATH'</span><span class="src-sym">))&nbsp;</span><span class="src-key">exit</span><span class="src-sym">(</span><span class="src-str">'No&nbsp;direct&nbsp;script&nbsp;access&nbsp;allowed'</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a2"></a>&nbsp;</div></li>
<li><div class="src-line"><a name="a3"></a><span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a4"></a><span class="src-doc">&nbsp;*&nbsp;Filters&nbsp;data&nbsp;library.</span></div></li>
<li><div class="src-line"><a name="a5"></a><span class="src-doc">&nbsp;*&nbsp;</span><span class="src-doc-coretag">@package</span><span class="src-doc">&nbsp;LIST_Libraries</span></div></li>
<li><div class="src-line"><a name="a6"></a><span class="src-doc">&nbsp;*&nbsp;</span><span class="src-doc-coretag">@author</span><span class="src-doc">&nbsp;Andrej&nbsp;Jursa</span></div></li>
<li><div class="src-line"><a name="a7"></a><span class="src-doc">&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a8"></a><span class="src-key">class&nbsp;</span><a href="../LIST_Libraries/Filter.html">Filter</a>&nbsp;<span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a9"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a10"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">const&nbsp;</span><span class="src-id">FILTERS_ARRAY&nbsp;</span>=&nbsp;<span class="src-str">'list_filters_array'</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a11"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">const&nbsp;</span><span class="src-id">FILTERS_SETTINGS&nbsp;</span>=&nbsp;<span class="src-str">'list_filters_settings'</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a12"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">const&nbsp;</span><span class="src-id">FILTER_SETTINGS_COURSE_FIELD&nbsp;</span>=&nbsp;<span class="src-str">'course_field'</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a13"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">const&nbsp;</span><span class="src-id">FILTER_SETTINGS_FIELDS_DELETED_ON_COURSE_CHANGE&nbsp;</span>=&nbsp;<span class="src-str">'fields_deleted_on_course_change'</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a14"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a15"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">protected&nbsp;</span><a href="../LIST_Libraries/Filter.html#var$CI">$CI</a>&nbsp;=&nbsp;<span class="src-id">NULL</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a16"></a>&nbsp;</div></li>
<li><div class="src-line"><a name="a17"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#method__construct">__construct</a><span class="src-sym">(</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a18"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a>&nbsp;=<span class="src-sym">&amp;&nbsp;</span><span class="src-id">get_instance</span><span class="src-sym">(</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a19"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">load</span><span class="src-sym">-&gt;</span><span class="src-id">library</span><span class="src-sym">(</span><span class="src-str">'session'</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a20"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a21"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a22"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a23"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;store&nbsp;filter&nbsp;data&nbsp;under&nbsp;filter&nbsp;name&nbsp;into&nbsp;session.</span></div></li>
<li><div class="src-line"><a name="a24"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$filter_name&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a25"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">array&lt;mixed&gt;&nbsp;</span><span class="src-doc-var">$filter_data&nbsp;</span><span class="src-doc">data&nbsp;of&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a26"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a27"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodstore_filter">store_filter</a><span class="src-sym">(</span><span class="src-var">$filter_name</span><span class="src-sym">,&nbsp;</span><span class="src-var">$filter_data</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a28"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><a href="http://www.php.net/is_array">is_array</a><span class="src-sym">(</span><span class="src-var">$filter_data</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<span class="src-sym">!</span><span class="src-key">empty</span><span class="src-sym">(</span><span class="src-var">$filter_data</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a29"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filters&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_ARRAY</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a30"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filters</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]&nbsp;</span>=&nbsp;<span class="src-var">$filter_data</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a31"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">set_userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_ARRAY</span><span class="src-sym">,&nbsp;</span><span class="src-var">$filters</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a32"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a33"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a34"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a35"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a36"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;return&nbsp;data&nbsp;by&nbsp;filter&nbsp;name.</span></div></li>
<li><div class="src-line"><a name="a37"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;If&nbsp;the&nbsp;second&nbsp;and&nbsp;third&nbsp;parameters&nbsp;are&nbsp;set,&nbsp;it&nbsp;will&nbsp;check&nbsp;teacher&nbsp;data&nbsp;for&nbsp;his&nbsp;prefered&nbsp;course&nbsp;and</span></div></li>
<li><div class="src-line"><a name="a38"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;inject&nbsp;this&nbsp;value&nbsp;into&nbsp;filter&nbsp;by&nbsp;specified&nbsp;conditions,&nbsp;only&nbsp;if&nbsp;these&nbsp;filter&nbsp;data&nbsp;are&nbsp;empty.</span></div></li>
<li><div class="src-line"><a name="a39"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$filter_name&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a40"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">integer</span><span class="src-doc">|</span><span class="src-doc-type">Teacher</span><span class="src-doc-var">$teacher&nbsp;</span><span class="src-doc">teacher&nbsp;id&nbsp;or&nbsp;teacher&nbsp;object.</span></div></li>
<li><div class="src-line"><a name="a41"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$course_field&nbsp;</span><span class="src-doc">field&nbsp;in&nbsp;filter&nbsp;which&nbsp;contain&nbsp;course&nbsp;id&nbsp;in&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a42"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@return&nbsp;</span><span class="src-doc-type">array&lt;midex&gt;&nbsp;</span><span class="src-doc">filter&nbsp;data.</span></div></li>
<li><div class="src-line"><a name="a43"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a44"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodrestore_filter">restore_filter</a><span class="src-sym">(</span><span class="src-var">$filter_name</span><span class="src-sym">,&nbsp;</span><span class="src-var">$teacher&nbsp;</span>=&nbsp;<span class="src-id">NULL</span><span class="src-sym">,&nbsp;</span><span class="src-var">$course_field&nbsp;</span>=&nbsp;<span class="src-id">NULL</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a45"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filters&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_ARRAY</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a46"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filters&nbsp;</span>=&nbsp;<span class="src-key">empty</span><span class="src-sym">(</span><span class="src-var">$filters</span><span class="src-sym">)&nbsp;</span>||&nbsp;<a href="http://www.php.net/is_null">is_null</a><span class="src-sym">(</span><span class="src-var">$filters</span><span class="src-sym">)&nbsp;</span>||&nbsp;<span class="src-sym">!</span><a href="http://www.php.net/is_array">is_array</a><span class="src-sym">(</span><span class="src-var">$filters</span><span class="src-sym">)&nbsp;</span>?&nbsp;<span class="src-key">array</span><span class="src-sym">(</span><span class="src-sym">)&nbsp;</span>:&nbsp;<span class="src-var">$filters</span><span class="src-sym">;&nbsp;</span></div></li>
<li><div class="src-line"><a name="a47"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter&nbsp;</span>=&nbsp;<a href="http://www.php.net/array_key_exists">array_key_exists</a><span class="src-sym">(</span><span class="src-var">$filter_name</span><span class="src-sym">,&nbsp;</span><span class="src-var">$filters</span><span class="src-sym">)&nbsp;</span>?&nbsp;<span class="src-var">$filters</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]&nbsp;</span>:&nbsp;<span class="src-key">array</span><span class="src-sym">(</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a48"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-sym">!</span><a href="http://www.php.net/is_null">is_null</a><span class="src-sym">(</span><span class="src-var">$teacher</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<span class="src-sym">!</span><a href="http://www.php.net/is_null">is_null</a><span class="src-sym">(</span><span class="src-var">$course_field</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<a href="http://www.php.net/is_string">is_string</a><span class="src-sym">(</span><span class="src-var">$course_field</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<span class="src-key">empty</span><span class="src-sym">(</span><span class="src-var">$filter</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a49"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-sym">!</span><a href="http://www.php.net/is_object">is_object</a><span class="src-sym">(</span><span class="src-var">$teacher</span><span class="src-sym">)&nbsp;</span>||&nbsp;<span class="src-sym">!</span><span class="src-var">$teacher&nbsp;</span>instanceof&nbsp;<span class="src-id"><a href="../LIST_DM_Models/Teacher.html">Teacher</a></span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a50"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$teacher_id&nbsp;</span>=&nbsp;<span class="src-var">$teacher</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a51"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$teacher&nbsp;</span>=&nbsp;<span class="src-key">new&nbsp;</span><span class="src-id"><a href="../LIST_DM_Models/Teacher.html">Teacher</a></span><span class="src-sym">(</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a52"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$teacher</span><span class="src-sym">-&gt;</span><span class="src-id">get_by_id</span><span class="src-sym">(</span><a href="http://www.php.net/intval">intval</a><span class="src-sym">(</span><span class="src-var">$teacher_id</span><span class="src-sym">))</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a53"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a54"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-var">$teacher</span><span class="src-sym">-&gt;</span><span class="src-id">exists</span><span class="src-sym">(</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a55"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter</span><span class="src-sym">[</span><span class="src-var">$course_field</span><span class="src-sym">]&nbsp;</span>=&nbsp;<span class="src-var">$teacher</span><span class="src-sym">-&gt;</span><span class="src-id">prefered_course_id</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a56"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a57"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a58"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">return&nbsp;</span><span class="src-var">$filter</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a59"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a60"></a>&nbsp;</div></li>
<li><div class="src-line"><a name="a61"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a62"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;store&nbsp;name&nbsp;of&nbsp;field&nbsp;containing&nbsp;course&nbsp;id&nbsp;inside&nbsp;filter&nbsp;identified&nbsp;by&nbsp;filter&nbsp;name.</span></div></li>
<li><div class="src-line"><a name="a63"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$filter_name&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a64"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$field_name&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;field&nbsp;containing&nbsp;course&nbsp;id.</span></div></li>
<li><div class="src-line"><a name="a65"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a66"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodset_filter_course_name_field">set_filter_course_name_field</a><span class="src-sym">(</span><span class="src-var">$filter_name</span><span class="src-sym">,&nbsp;</span><span class="src-var">$field_name</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a67"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><a href="http://www.php.net/is_null">is_null</a><span class="src-sym">(</span><span class="src-var">$field_name</span><span class="src-sym">)&nbsp;</span>||&nbsp;<span class="src-sym">(</span><a href="http://www.php.net/is_string">is_string</a><span class="src-sym">(</span><span class="src-var">$field_name</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<span class="src-sym">!</span><span class="src-key">empty</span><span class="src-sym">(</span><span class="src-var">$field_name</span><span class="src-sym">)))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a68"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter_settings&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_SETTINGS</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a69"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_COURSE_FIELD</span><span class="src-sym">]&nbsp;</span>=&nbsp;<span class="src-var">$field_name</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a70"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">set_userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_SETTINGS</span><span class="src-sym">,&nbsp;</span><span class="src-var">$filter_settings</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a71"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a72"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a73"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a74"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a75"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;store&nbsp;array&nbsp;of&nbsp;field&nbsp;names&nbsp;which&nbsp;have&nbsp;to&nbsp;be&nbsp;deleted,&nbsp;when&nbsp;filter&nbsp;is&nbsp;forced&nbsp;to&nbsp;change&nbsp;course&nbsp;id.</span></div></li>
<li><div class="src-line"><a name="a76"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$filter_name&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a77"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">array&lt;string&gt;&nbsp;</span><span class="src-doc-var">$fields&nbsp;</span><span class="src-doc">array&nbsp;of&nbsp;field&nbsp;names.</span></div></li>
<li><div class="src-line"><a name="a78"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a79"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodset_filter_delete_on_course_change">set_filter_delete_on_course_change</a><span class="src-sym">(</span><span class="src-var">$filter_name</span><span class="src-sym">,&nbsp;</span><span class="src-var">$fields</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a80"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#methodis_array_of_strings">is_array_of_strings</a><span class="src-sym">(</span><span class="src-var">$fields</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a81"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter_settings&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_SETTINGS</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a82"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_FIELDS_DELETED_ON_COURSE_CHANGE</span><span class="src-sym">]&nbsp;</span>=&nbsp;<span class="src-var">$fields</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a83"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">set_userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_SETTINGS</span><span class="src-sym">,&nbsp;</span><span class="src-var">$filter_settings</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a84"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a85"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a86"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a87"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a88"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;return&nbsp;name&nbsp;of&nbsp;field&nbsp;which&nbsp;contain&nbsp;course&nbsp;id.</span></div></li>
<li><div class="src-line"><a name="a89"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$filter_name&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a90"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@return&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;field&nbsp;or&nbsp;NULL&nbsp;if&nbsp;not&nbsp;set.</span></div></li>
<li><div class="src-line"><a name="a91"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a92"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodget_filter_course_name_field">get_filter_course_name_field</a><span class="src-sym">(</span><span class="src-var">$filter_name</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a93"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter_settings&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_SETTINGS</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a94"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-sym">!</span>isset<span class="src-sym">(</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">)&nbsp;</span>||&nbsp;<span class="src-sym">!</span>isset<span class="src-sym">(</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_COURSE_FIELD</span><span class="src-sym">]</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{&nbsp;</span><span class="src-key">return&nbsp;</span><span class="src-id">NULL</span><span class="src-sym">;&nbsp;</span><span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a95"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">return&nbsp;</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_COURSE_FIELD</span><span class="src-sym">]</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a96"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a97"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a98"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a99"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;return&nbsp;name&nbsp;of&nbsp;fields&nbsp;which&nbsp;will&nbsp;be&nbsp;deleted&nbsp;from&nbsp;filter&nbsp;when&nbsp;course&nbsp;id&nbsp;forced&nbsp;to&nbsp;be&nbsp;changed.</span></div></li>
<li><div class="src-line"><a name="a100"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">string&nbsp;</span><span class="src-doc-var">$filter_name&nbsp;</span><span class="src-doc">name&nbsp;of&nbsp;filter.</span></div></li>
<li><div class="src-line"><a name="a101"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@return&nbsp;</span><span class="src-doc-type">array&lt;string&gt;&nbsp;</span><span class="src-doc">array&nbsp;of&nbsp;field&nbsp;names&nbsp;or&nbsp;NULL&nbsp;if&nbsp;not&nbsp;set.</span></div></li>
<li><div class="src-line"><a name="a102"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a103"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodget_filter_delete_on_course_change">get_filter_delete_on_course_change</a><span class="src-sym">(</span><span class="src-var">$filter_name</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a104"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter_settings&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_SETTINGS</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a105"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-sym">!</span>isset<span class="src-sym">(</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">)&nbsp;</span>||&nbsp;<span class="src-sym">!</span>isset<span class="src-sym">(</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_FIELDS_DELETED_ON_COURSE_CHANGE</span><span class="src-sym">]</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{&nbsp;</span><span class="src-key">return&nbsp;</span><span class="src-id">NULL</span><span class="src-sym">;&nbsp;</span><span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a106"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">return&nbsp;</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter_name</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_FIELDS_DELETED_ON_COURSE_CHANGE</span><span class="src-sym">]</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a107"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a108"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a109"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a110"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;force&nbsp;all&nbsp;filters&nbsp;which&nbsp;have&nbsp;field&nbsp;for&nbsp;course&nbsp;id&nbsp;to&nbsp;set&nbsp;this&nbsp;field&nbsp;to&nbsp;id&nbsp;specified&nbsp;in&nbsp;parameter.</span></div></li>
<li><div class="src-line"><a name="a111"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">Course</span><span class="src-doc">|</span><span class="src-doc-type">integer</span><span class="src-doc-var">$course&nbsp;</span><span class="src-doc">course&nbsp;id,&nbsp;existing&nbsp;course&nbsp;object&nbsp;or&nbsp;NULL.</span></div></li>
<li><div class="src-line"><a name="a112"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@return&nbsp;</span><span class="src-doc-type">boolean&nbsp;</span><span class="src-doc">TRUE&nbsp;on&nbsp;success,&nbsp;FALSE&nbsp;otherwise.</span></div></li>
<li><div class="src-line"><a name="a113"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a114"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">public&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodset_all_filters_course">set_all_filters_course</a><span class="src-sym">(</span><span class="src-var">$course</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a115"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$course_id&nbsp;</span>=&nbsp;<span class="src-num">0</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a116"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><a href="http://www.php.net/is_numeric">is_numeric</a><span class="src-sym">(</span><span class="src-var">$course</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<a href="http://www.php.net/intval">intval</a><span class="src-sym">(</span><span class="src-var">$course</span><span class="src-sym">)&nbsp;</span>&gt;&nbsp;<span class="src-num">0</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a117"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$course_id&nbsp;</span>=&nbsp;<a href="http://www.php.net/intval">intval</a><span class="src-sym">(</span><span class="src-var">$course</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a118"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}&nbsp;</span><span class="src-key">elseif&nbsp;</span><span class="src-sym">(</span><a href="http://www.php.net/is_object">is_object</a><span class="src-sym">(</span><span class="src-var">$course</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<span class="src-var">$course&nbsp;</span>instanceof&nbsp;<span class="src-id"><a href="../LIST_DM_Models/Course.html">Course</a>&nbsp;</span>&amp;&amp;&nbsp;<span class="src-var">$course</span><span class="src-sym">-&gt;</span><span class="src-id">exists</span><span class="src-sym">(</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a119"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$course_id&nbsp;</span>=&nbsp;<span class="src-var">$course</span><span class="src-sym">-&gt;</span><span class="src-id">id</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a120"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}&nbsp;</span><span class="src-key">elseif&nbsp;</span><span class="src-sym">(</span><a href="http://www.php.net/is_null">is_null</a><span class="src-sym">(</span><span class="src-var">$course</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a121"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$course_id&nbsp;</span>=&nbsp;<span class="src-id">NULL</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a122"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}&nbsp;</span><span class="src-key">else&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a123"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">return&nbsp;</span><span class="src-id">FALSE</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a124"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a125"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a126"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filters&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_ARRAY</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a127"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filter_settings&nbsp;</span>=&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_SETTINGS</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a128"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-sym">!</span><span class="src-key">empty</span><span class="src-sym">(</span><span class="src-var">$filters</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{&nbsp;</span><span class="src-key">foreach</span><span class="src-sym">(</span><span class="src-var">$filters&nbsp;</span><span class="src-key">as&nbsp;</span><span class="src-var">$filter&nbsp;</span>=&gt;&nbsp;<span class="src-var">$data</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a129"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span>isset<span class="src-sym">(</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter</span><span class="src-sym">]</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a130"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$data&nbsp;</span>=&nbsp;<a href="http://www.php.net/is_array">is_array</a><span class="src-sym">(</span><span class="src-var">$data</span><span class="src-sym">)&nbsp;</span>?&nbsp;<span class="src-var">$data&nbsp;</span>:&nbsp;<span class="src-key">array</span><span class="src-sym">(</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a131"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span>isset<span class="src-sym">(</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_COURSE_FIELD</span><span class="src-sym">]</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a132"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$data</span><span class="src-sym">[</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_COURSE_FIELD</span><span class="src-sym">]]&nbsp;</span>=&nbsp;<span class="src-var">$course_id</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a133"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a134"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span>isset<span class="src-sym">(</span><span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_FIELDS_DELETED_ON_COURSE_CHANGE</span><span class="src-sym">]</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a135"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$delete_fields&nbsp;</span>=&nbsp;<span class="src-var">$filter_settings</span><span class="src-sym">[</span><span class="src-var">$filter</span><span class="src-sym">]</span><span class="src-sym">[</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTER_SETTINGS_FIELDS_DELETED_ON_COURSE_CHANGE</span><span class="src-sym">]</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a136"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#methodis_array_of_strings">is_array_of_strings</a><span class="src-sym">(</span><span class="src-var">$delete_fields</span><span class="src-sym">)&nbsp;</span>&amp;&amp;&nbsp;<span class="src-sym">!</span><span class="src-key">empty</span><span class="src-sym">(</span><span class="src-var">$delete_fields</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{&nbsp;</span><span class="src-key">foreach&nbsp;</span><span class="src-sym">(</span><span class="src-var">$delete_fields&nbsp;</span><span class="src-key">as&nbsp;</span><span class="src-var">$field</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a137"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><a href="http://www.php.net/array_key_exists">array_key_exists</a><span class="src-sym">(</span><span class="src-var">$field</span><span class="src-sym">,&nbsp;</span><span class="src-var">$data</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{&nbsp;</span>unset<span class="src-sym">(</span><span class="src-var">$data</span><span class="src-sym">[</span><span class="src-var">$field</span><span class="src-sym">]</span><span class="src-sym">)</span><span class="src-sym">;&nbsp;</span><span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a138"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}}</span></div></li>
<li><div class="src-line"><a name="a139"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a140"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$filters</span><span class="src-sym">[</span><span class="src-var">$filter</span><span class="src-sym">]&nbsp;</span>=&nbsp;<span class="src-var">$data</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a141"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a142"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}}</span></div></li>
<li><div class="src-line"><a name="a143"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$this</span><span class="src-sym">-&gt;</span><a href="../LIST_Libraries/Filter.html#var$CI">CI</a><span class="src-sym">-&gt;</span><span class="src-id">session</span><span class="src-sym">-&gt;</span><span class="src-id">set_userdata</span><span class="src-sym">(</span><span class="src-id">self</span><span class="src-sym">::</span><span class="src-id">FILTERS_ARRAY</span><span class="src-sym">,&nbsp;</span><span class="src-var">$filters</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a144"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">return&nbsp;</span><span class="src-id">TRUE</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a145"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a146"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a147"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-doc">/**</span></div></li>
<li><div class="src-line"><a name="a148"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;method&nbsp;will&nbsp;verify&nbsp;if&nbsp;the&nbsp;array&nbsp;passed&nbsp;by&nbsp;parameter&nbsp;is&nbsp;array&nbsp;of&nbsp;strings.</span></div></li>
<li><div class="src-line"><a name="a149"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@param&nbsp;</span><span class="src-doc-type">array&lt;mixed&gt;&nbsp;</span><span class="src-doc-var">$array&nbsp;</span><span class="src-doc">array&nbsp;to&nbsp;verify.</span></div></li>
<li><div class="src-line"><a name="a150"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;</span><span class="src-doc-coretag">@return&nbsp;</span><span class="src-doc-type">boolean&nbsp;</span><span class="src-doc">TRUE,&nbsp;if&nbsp;parameter&nbsp;is&nbsp;array&nbsp;of&nbsp;strings,&nbsp;FALSE&nbsp;otherwise.</span></div></li>
<li><div class="src-line"><a name="a151"></a><span class="src-doc">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</span></div></li>
<li><div class="src-line"><a name="a152"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">private&nbsp;</span><span class="src-key">function&nbsp;</span><a href="../LIST_Libraries/Filter.html#methodis_array_of_strings">is_array_of_strings</a><span class="src-sym">(</span><span class="src-var">$array</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a153"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-sym">!</span><a href="http://www.php.net/is_array">is_array</a><span class="src-sym">(</span><span class="src-var">$array</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{&nbsp;</span><span class="src-key">return&nbsp;</span><span class="src-id">FALSE</span><span class="src-sym">;&nbsp;</span><span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a154"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-key">empty</span><span class="src-sym">(</span><span class="src-var">$array</span><span class="src-sym">))&nbsp;</span><span class="src-sym">{&nbsp;</span><span class="src-key">return&nbsp;</span><span class="src-id">TRUE</span><span class="src-sym">;&nbsp;</span><span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a155"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$result&nbsp;</span>=&nbsp;<span class="src-id">TRUE</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a156"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">foreach</span><span class="src-sym">(</span><span class="src-var">$array&nbsp;</span><span class="src-key">as&nbsp;</span><span class="src-var">$item</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{</span></div></li>
<li><div class="src-line"><a name="a157"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-var">$result&nbsp;</span>=&nbsp;<span class="src-var">$result&nbsp;</span>&amp;&amp;&nbsp;<a href="http://www.php.net/is_string">is_string</a><span class="src-sym">(</span><span class="src-var">$item</span><span class="src-sym">)</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a158"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">if&nbsp;</span><span class="src-sym">(</span><span class="src-sym">!</span><span class="src-var">$result</span><span class="src-sym">)&nbsp;</span><span class="src-sym">{&nbsp;</span><span class="src-key">break</span><span class="src-sym">;&nbsp;</span><span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a159"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a160"></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-key">return&nbsp;</span><span class="src-var">$result</span><span class="src-sym">;</span></div></li>
<li><div class="src-line"><a name="a161"></a>&nbsp;&nbsp;&nbsp;&nbsp;<span class="src-sym">}</span></div></li>
<li><div class="src-line"><a name="a162"></a>&nbsp;&nbsp;&nbsp;&nbsp;</div></li>
<li><div class="src-line"><a name="a163"></a><span class="src-sym">}</span></div></li>
</ol></div>
</div>
	<p class="notes" id="credit">
		Documentation generated on Fri, 13 Sep 2013 12:32:35 +0200 by <a href="http://www.phpdoc.org" target="_blank">phpDocumentor 1.4.4</a>
	</p>
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